Lacsamana RG.
J Fla Med Assoc. 1987 Jun;74(6):389-90.
PMID: 3668485

SPEIR EB.
West J Surg Obstet Gynecol. 1951 Nov;59(11):594-9.
PMID: 14877122

Leap KE.
Med Econ. 2008 May 02;85(9):52-3.
PMID: 18590072

GAUTHIER CA.
Laval Med. 1947 Sep;12(7):775-812.
PMID: 20261409

Meighan SS.
Internist. 1989 Jan;30(1):24-5.
PMID: 10291584

[No authors listed]
Am Coll Physicians Obs. 1982 Aug;2(7):1, 15.
PMID: 10324232

Aring CD.
JAMA. 1974 Feb 04;227(5):512.
PMID: 4859704